Answer:
Solving the equation using quadratic formula we get:
Step-by-step explanation:
We need to solve the equation using quadratic formula.
The quadratic formula is:
For the given equation:
We can write it as:
We have a = 3, b= -2 and c=9
Putting values in quadratic formula and finding value of r
So, solving the equation using quadratic formula we get:
Answer:
-48
Step-by-step explanation:
20 x -2 = -40
-2/5 x 20 = -8
-40-8=-48
The answer to that question is that the correct answer is 3.
Point estimate (average) = $750
Standard deviation = $85
P(X>$825) = ?
Z = (X-mean)/Standard deviation = (825-750)/85 ≈ 0.88
From Z-table, P(X=825) = 0.8106
Therefore,
P(X>$825) = 1 - P(X=$825) = 1-0.8106 = 0.1894 = 18.94%
Percentage of teachers earning more than $825 is 18.94%.
To find the probability you will multiply the probability of each possibility.
2/12 (1st attempt) x 1/11 (2nd attempt)
The answer is 1/66 chance (Choice C).